Installation Instructions38MGQ / 40MAQ / 40MBC / 40MBD / 40MBF Multi---Zone Ductless System Sizes...

38MGQ / 40MAQ / 40MBC / 40MBD / 40MBFMulti---Zone Ductless SystemSizes 18K, 24K, 30K, 36K and 48K

Installation InstructionsNOTE: Read the entire instruction manual before starting the installation.

TABLE OF CONTENTSPAGE

SAFETY CONSIDERATIONS 2. . . . . . . . . . . . . . . . . . . . . . . . .

GENERAL 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PIPING REQUIREMENTS 3. . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL DATA 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DIMENSIONS 6--12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CLEARANCES 13--15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSTALLATION GUIDE 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSTALLATION TIPS 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HIGH WALL INDOOR UNIT INSTALLATION 16. . . . . . . . . . .

CASSETTE INDOOR UNIT INSTALLATION 18. . . . . . . . . . . .

INDOOR UNIT MAIN BODY INSTALLATION 18. . . . . . . . . .

INDOOR UNIT INSTALLATION 19. . . . . . . . . . . . . . . . . . . . . .

DUCTED INDOOR UNITS INSTALLATION 24. . . . . . . . . . . .

FAN PERFORMANCES (DUCTED UNITS) 28. . . . . . . . . . . . .

FLOOR CONSOLE INDOOR UNIT INSTALLATION 30. . . . .

INSTALLING THE INDOOR UNIT 31. . . . . . . . . . . . . . . . . . . .

OUTDOOR UNIT INSTALLATION 32. . . . . . . . . . . . . . . . . . . .

START--UP 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CONNECTION DIAGRAMS 36. . . . . . . . . . . . . . . . . . . . . . . . .

OUTDOOR UNIT DIAGNOSTIC GUIDES 38. . . . . . . . . . . . . .

2

SAFETY CONSIDERATIONSInstalling, starting up, and servicing air--conditioning equipmentcan be hazardous due to system pressures, electrical components,and equipment location (roofs, elevated structures, etc.).

Only trained, qualified installers and service mechanics shouldinstall, start--up, and service this equipment.

Untrained personnel can perform basic maintenance functions suchas cleaning coils. All other operations should be performed bytrained service personnel.

When working on the equipment, observe precautions in theliterature and on tags, stickers, and labels attached to theequipment.

Follow all safety codes. Wear safety glasses and work gloves. Keepquenching cloth and fire extinguisher nearby when brazing. Usecare in handling, rigging, and setting bulky equipment.

Read these instructions thoroughly and follow all warnings orcautions included in literature and attached to the unit. Consultlocal building codes and current editions of the National ElectricalCode ( NEC ) NFPA 70. In Canada, refer to current editions of theCanadian electrical code CSA 22.1.

Recognize safety information. This is the safety--alert symbol !! .When you see this symbol on the unit and in instructions ormanuals, be alert to the potential for personal injury. Understandthese signal words: DANGER, WARNING, and CAUTION.These words are used with the safety--alert symbol. DANGERidentifies the most serious hazards which will result in severepersonal injury or death. WARNING signifies hazards which couldresult in personal injury or death. CAUTION is used to identifyunsafe practices which may result in minor personal injury orproduct and property damage. NOTE is used to highlightsuggestions which will result in enhanced installation, reliability, oroperation.

! WARNINGELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personalinjury or death.

Before installing, modifying, or servicing system, mainelectrical disconnect switch must be in the OFFposition. There may be more than 1 disconnect switch.Lock out and tag switch with a suitable warning label.

CAUTION!

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipmentdamage or improper operation.

Do not bury more than 36 in. (914 mm) of refrigerant pipein the ground. If any section of pipe is buried, there must bea 6 in. (152 mm) vertical rise to the valve connections onthe outdoor units. If more than the recommended length isburied, refrigerant may migrate to the cooler buried sectionduring extended periods of system shutdown. This causesrefrigerant slugging and could possibly damage thecompressor at start--up.

GENERALThese instructions cover the installation, start--up and servicing of themulti--zone outdoor unit connected to up to five indoor fan coil units.For approved combinations, please refer to the Product Data.

3

PIPING REQUIREMENTSIMPORTANT: Both refrigerant lines must be insulated separately.

The minimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m). The following lengths are allowed.

Table 1—Piping LengthsSystem size 18K 27K 36K 48K

Piping

Min. Piping Length per each indoor unit ft (m) 10 (3) 10 (3) 10 (3) 10 (3)Standard Piping Length per each indoor unit ft (m) 25 (7.5) 25 (7.5) 25 (7.5) 25 (7.5)Max. outdoor ---indoor height difference(OU higher than IU) ft (m) 32(10) 32(10) 32(10) 32(10)

Max. outdoor ---indoor height difference(IU higher than OU) ft (m) 49(15) 49(15) 49(15) 49(15)

Max. height different between indoor units ft (m) 32(10) 32(10) 32(10) 32(10)Max. Length per each indoor unit ft (m) 66(20) 82(25) 98(30) 98(30)Max. Piping Length with no additionalrefrigerant charge per System (Standard Pipinglength x No. of Zones)

ft (m) 49(15) 74(22.5) 98(30) 123(37.5)

Total Maximum Piping Length per system Ft. (m) 98(30) 147(45) 196(60) 245(75)Additional refrigerant charge(between Standard – Max piping length) Oz/ft (g/m) 0.16(15) 0.16(15) 0.16(15) 0.16(15)

Gas Pipe Size in (mm) 3/8*2 (9.52*2) 3/8*2 (9.52*3) 1/2 *1 (12.7*1)+ 3/8*3 (9.5*3)

1/2 *2 (12.7*2)+ 3/8*3 (9.5*3)

RefrigerantLiquid Pipe Size in (mm) 1/4 *2 (6.35*2) 1/4 *3 (6.35*3) 1/4 *4 (6.35*4) 1/4 *5 (6.35*5)Refrigerant Type R410A R410A R410A R410ACharge Amount Lbs (kg) 4.19 (1.9) 6.17 (2.8) 7.94 (3.6) 10.14 (4.6)

NOTE: The refrigerant charge included is adequate for the number of zones multiplied by the maximum piping length per zone with no additionalrefrigerant.

Table 2—Indoor High Wall

Indoor High WallSIZE 9 12 18 24Pipe Connection Size --- Liquid in. 1/4” 1/4” 1/4” 3/8”Pipe Connection Size --- Suction in. 3/8” 1/2” 1/2” 5/8”

Table 3—Indoor Cassette

Indoor CassetteSIZE 9 12 18Pipe Connection Size --- Liquid in. 1/4” 1/4” 1/4”Pipe Connection Size --- Suction in. 3/8” 1/2” 1/2”

Table 4—Indoor Ducted

Indoor DuctedSIZE 9 12 18 24Pipe Connection Size --- Liquid in. 1/4” 1/4” 1/4” 3/8”Pipe Connection Size --- Suction in. 3/8” 1/2” 1/2” 5/8”

Table 5—Indoor Floor Console

Indoor Floor ConsoleSIZE 9 12Pipe Connection Size --- Liquid in. 1/4” 1/4”Pipe Connection Size --- Suction in. 3/8” 1/2”

Refrigerant Piping:Line sets to be sized based on the connection size of the indoor unit. Each pipe should be insulated individually.Conversion Joints:The outdoor unit may include a package of conversion joints to facilitate installation of various sizes of fan coils. These joints are to beconnected to the outdoor unit as needed to match the line set size.

Table 6—Conversion JointsNUMBER OF ZONES SIZE ADAPTOR QUANTITY

2 zone 18 3/8”--- ---1/2” 23 zone 27 3/8”--- ---1/2” 3

4 zone 363/8”--- ---1/2” 31/2”--- ---3/8” 1

5 zone 48

1/2”--- ---3/8” 21/4”--- ---3/8” 21/2”--- ---5/8” 23/8”--- ---1/2” 3

Table 7—Additional Refrigerant Charge

Unit Size Number of Zones Charge oz. (kg.) Additional Charge RequiredAfter ft. (m)

Additional Chargeoz./ft. (g/m)

Total Maximum Pip-ing Length ft. (m.)

18 2 67.02 (1.9) 49 (15) 0.16 (15) 98 (30)27 3 98.76 (2.8) 74 (22.5) 0.16 (15) 147 (45)36 4 126.98 (3.6) 98 (30) 0.16 (15) 196 (60)48 5 162.26 (4.6) 123 (37.5) 0.16 (15) 245 (75)

Additional Refrigerant CalculationSum Total Liquid Pipe ft. (m) --- Additional Charge Required After ft. (m.) x Additional Charge oz./ft. (g/m) 0.16 (15)NOTES:If the calculation results in a negative number no additional refrigerant is required.ELECTRONIC EXPANSION VALVES IN THE OUTDOOR UNIT ARE USED AS METERING DEVICES.

4

ELECTRICAL DATATable 8—High Wall

UNIT SIZESYSTEM VOLTAGE OPERATING VOLTAGE INDOOR FANVOLT / PHASE / HZ MAX / MIN V---PH---HZ FLA HP W

9

208---230/1/60 253 / 187 208---230/1/60

0.07 0.027 2012 0.07 0.027 2018 0.17 0.077 5824 0.23 0.08 6030 0.23 0.08 60

Table 9—Ducted

UNIT SIZE SYSTEM VOLTAGE OPERATING VOLTAGE INDOOR FANVOLT / PHASE / HZ MAX / MIN FLA HP W

9

208---230/1/60 253 / 187

1.03 0.073 5512 1.03 0.073 5518 0.83 0.12 9024 0.83 0.12 9036 1.263 0.2 15048 2.23 0.32 240

Table 10—Cassette

UNIT SIZE SYSTEM VOLTAGE OPERATING VOLTAGE INDOOR FANVOLT / PHASE / HZ MAX / MIN V---PH---HZ FLA HP W

9208---230/1/60 253 / 187 208---230/1/60

0.146 0.061 4612 0.146 0.061 4618 0.146 0.061 46

Table 11—Floor Console

UNIT SIZE SYSTEM VOLTAGE OPERATING VOLTAGE INDOOR FANVOLT / PHASE / HZ MAX / MIN V---PH---HZ FLA HP W

9208---230/1/60 253 / 187 208---230/1/60

0.21 0.027 2012 0.21 0.027 20

Table 12—Multi Zone Outdoor Unit

UNIT SIZE SYSTEM VOLTAGE OPERATING VOLTAGE COMPRESSOR OUTDOOR FAN MCAMAX

FUSE/CBAMP

VOLT / PHASE / HZ MAX / MIN RLA FLA HP W18

208---230/1/60 253 / 187

9.7 3 0.16 50 15 2027 8.85 3 0.16 120 19 2536 13.4 3 0.16 120 27 4048 13.5 3 0.11 85 29 50

*Permissible limits of the voltage range at which the unit will operate satisfactorily.LEGENDFLA - Full Load AmpsLRA - Locked Rotor AmpsMCA - Minimum Circuit AmpsRLA - Rated Load Amps

5

CAUTION!EQUIPMENT DAMAGE HAZARD


S Wires should be sized based on NEC and local codes.

S Use copper conductors only with a minimum 600 volt .rating and 2/64--inch thick insulation.

CAUTION!


Failure to follow this caution may result in equipment damageor improper operation.S Be sure to comply with local codes while running wire fromindoor unit to outdoor unit.

S Every wire must be connected firmly. Loose wiring maycause terminal to overheat or result in unit malfunction. Afire hazard may also exist. Therefore, be sure all wiring istightly connected.

S No wire should be allowed to touch refrigerant tubing,compressor or any moving parts.

S Disconnecting means must be provided and shall be locatedwithin sight and readily accessible from the air conditioner.

S Connecting cable with conduit shall be routed through holein the conduit panel.

All wires must be sized per NEC (National Electrical Code) orCEC (Canadian Electrical Code) and local codes. Use theElectrical Data table MCA (minimum circuit amps) and MOCP(maximum over current protection) to correctly size the wires andthe disconnect fuse or breakers respectively.

Per the caution note, use only copper conductors with a minimum600 volt rating and 2/64--inch thick insulation. The use of BXcable is not recommended.

Recommended Connection Method for Power andCommunication --Wiring -- Power and Communication Wiring:

The main power is supplied to the outdoor unit. The field supplied14/3 power/communication wiring from the outdoor unit to indoorunit consists of four (4) wires and provides the power for theindoor unit. Two wires are high voltage AC power; one iscommunication wiring and the other is a ground wire.

Recommended Connection Method for Power andCommunication Wiring (To minimize communication wiringinterference)

Power Wiring:

The main power is supplied to the outdoor unit. The field suppliedpower wiring from the outdoor unit to the indoor unit consists of three(3) wires and provides the power for the indoor unit. Two wires arehigh voltage AC power and one is a ground wire. To minimize avoltage drop, the factory recommended wire size is 14/2 stranded witha ground.

Communication Wiring:

A separate shielded copper conductor only, with a minimum 600volt rating and 2/64--inch thick insulation, must be used as thecommunication wire from the outdoor unit to the indoor unit.Please use a separate shielded 16GA stranded control wire.

6

DIMENSIONS -- INDOOR

Fig. 1 --- High Wall Dimensions

Table 13—High Wall Dimensions

UNIT SIZE W In. (mm) D In. (mm) H In. (mm) OPERATING WEIGHTLbs. (kg)

9K/12K 32.9(835) 7.8(198) 11.0(280) 19.2(8.7)18K 39.0(990) 8.6(218) 12.4(315) 26.5(12.0)24K 46.7(1186) 10.2(258) 13.4(343) 40.8(18.5)

Fig. 2 --- Cassette Dimensions

Table 14—Cassette Dimensions

UNIT SIZE 9K 12K 18KBODY PANEL BODY PANEL BODY PANEL

Height in(mm) 10.24 (260) 1.97 (50) 10.24 (260) 1.97 (50) 10.24 (260) 1.97 (50)Width in(mm) 22.44 (570) 25.47 (647) 22.44 (570) 25.47 (647) 22.44 (570) 25.47 (647)Depth in(mm) 22.44 (570) 25.47 (647) 22.44 (570) 25.47 (647) 22.44 (570) 25.47 (647)

OperatingWeight lbs(kg) 35.27 (16) 5.51 (2.5) 35.27 (16) 5.51 (2.5) 39.68 (18) 5.51 (2.5)

7

DIMENSIONS -- INDOOR (CONTINUED)

Fig. 3 --- Ducted Dimensions

Table 15—Ducted Dimensions

OUTLINE DIMENSIONSin(mm)

AIR OUTLETOPENING SIZEin(mm)

AIR RETURNOPENING SIZEin(mm)

HANGARBRACKETSin(mm)

REFRIGERANT PIPELOCATIONSin(mm)

OPERATINGWEIGHTLbs. (kg)in(mm)

SIZE A B C D E F G H I J K L M H1 H2 W1 W2

9 27.6(700)

8.2(210)

25(635)

22.4(570)

2.5(65)

19.4(493)

1.3(35)

4.6(119)

23.4(595)

7.8(200)

3.1(80)

29.1(740)

13.8(350)

4.7(120)

5.6(143)

3.7(95)

5.9(150) 39.90 (18.1)

12 27.6(700)

8.2(210)

25(635)

22.4(570)

2.5(65)

19.4(493)

1.3(35)

4.6(119)

23.4(595)

7.8(200)

3.1(80)

29.1(740)

13.8(350)

4.7(120)

5.6(143)

3.7(95)

5.9(150) 39.90 (18.1)

18 36.2(920)

8.2(210)

25(635)

22.4(570)

2.5(65)

19.4(493)

1.3(35)

4.6(119)

32.0(815)

7.8(200)

3.1(80)

37.8(960)

13.8(350)

4.7(120)

5.6(143)

3.7(95)

5.9(150)

50.7(23)

24 36.2(920)

10.6(270)

25(635)

22.4(570)

2.5(65)

19.4(493)

1.3(35)

7.0(179)

32.0(815)

10.2(260)

0.7(20)

37.8(960)

13.8(350)

4.7(120)

5.6(143)

3.7(95)

5.9(150)

57.32(26)

8

DIMENSIONS -- INDOOR (CONTINUED)

Fig. 4 --- Floor Console Dimensions

Table 16—Floor Console DimensionsUNIT SIZE 9 12

Height in (mm) 8.27 (210) 8.27 (210)Width in (mm) 27.56 (700) 27.56 (700)Depth in (mm) 23.62 (600) 23.62 (600)

Operating Weight Lbs. (kg) 32.41 (14.7) 32.41 (14.7)

9

DIMENSIONS -- OUTDOORTable 17— Dimensions

UNIT SIZE 18 27 36 48Height in (mm) 27.56(700) 31.89(810) 31.89(810) 36.93(1369)Width in (mm) 33.27(845) 37.20(945) 37.20(945) 53.9(938)Depth in (mm) 12.60(320) 15.55(395) 15.55(395) 15.43(392)

Weight ---Net lbs (kg) 114.63(52) 154.76(70.2) 169.75(77) 255.50(115.9)

Fig. 5 --- Outdoor Dimensions Size 18

NOTE: No master valves available on Size 18K.

10

DIMENSIONS -- OUTDOOR (CONTINUED)

Suction


11


Suction


12


Suction


13

CLEARANCES -- INDOORNOTE: Allow sufficient space for airflow and unit servicing. See Fig. 9 through 14 for minimum required clearances.

6" (0.15m) min.

5"(0.13m)

min.

6'

5"(0.13m)

min.

(1.8m)

CEILING

FLOOR

Fig. 9 --- High Wall Clearance

Fig. 10 --- Cassette Unit Clearance

14

CLEARANCES -- INDOOR (CONTINUED)

19.7in /500mm /100mm

3.9in

/1000mm39.4in

/250mm9.8in

/200mm7.9in

/500

mm

19.7

in

/3m9.8ft

Fig. 11 --- Ducted Clearance

Fig. 12 --- Ducted Clearance

Fig. 13 --- Floor Console Clearances

15

CLEARANCES -- OUTDOOR

A

D B

Air-outlet

Air-inlet

C

E

Fig. 14 --- Clearances Outdoor

Table 18— Clearances Outdoor Values

UNITMINIMUM VALUE

in. (mm)A 24 (609)B 24 (609)C 24 (609)D 4 (101)E 4 (101)

16

INSTALLATION GUIDEUp to five fan coil units can be connected to one outdoor unit.Refer to the Product Data for approved combinations.

Ideal installation locations include:Each Indoor UnitS A location where there are no obstacles near inlet and outlet area.S A location which can bear the weight of indoor unit.S Do not install indoor units near a direct source of heat such asdirect sunlight or a heating appliance.

S A location with the appropriate clearances (see Fig. 9 -- 13).Outdoor UnitS A convenient location for the installation that is not exposed tostrong wind. If unit is exposed to strong winds it is recommendedthat a field--fabricated wind baffle be used.

S A location which can bear the weight of outdoor unit and wherethe outdoor unit can be mounted in a level position.

S A location which provides appropriate clearances (see Fig. 14).S Do not install the indoor or outdoor units in a location withspecial environmental conditions. For those applications, contactyour Sales Representative.

INSTALLATION TIPSIdeal installation locations include:Indoor UnitS A location where there are no obstacles near inlet and outlet area.S A location which can bear the weight of indoor unit.S Do not install indoor units near a direct source of heat such asdirect sunlight or a heating appliance.

S A location which provides appropriate clearances as outlined inFig. 9 -- 13.

Outdoor UnitS A location which is convenient to installation and not exposed tostrong wind.

S A location which can bear the weight of the outdoor unit andwhere the outdoor unit can be mounted in a level position.

S A location with appropriate clearances as outlined in Fig. 14.S Do not install the indoor or outdoor units in a location withspecial environmental conditions. For those applications, contactyour Ductless Split representative.

HIGH WALL INDOOR UNIT INSTALLATIONINSTALL MOUNTING PLATEThe mounting plate will look like one of the following figures (15-- 17) depending on the model size:

Fig. 15 --- Mounting Plate -- Model sizes 09, 12

Fig. 16 --- Mounting Plate -- Model size 18

Fig. 17 --- Mounting Plate -- Model sizes 24, 301. Carefully remove the mounting plate, which is attached tothe back of the indoor unit.

2. The mounting plate should be located horizontally and levelon the wall. All minimum spacings shown in Fig. 9--13 and15 should be maintained.

3. If the wall is block, brick, concrete or similar material, drill.2” (5 mm) diameter holes and insert anchors for theappropriate mounting screws.

4. Attach the mounting plate to the wall.

DRILL HOLE IN WALL FOR INTERCONNECTINGPIPING, DRAIN ANDWIRINGRefrigerant Line Routing

The refrigerant lines may be routed in any of the four directionsshown in Fig. 19.

For maximum serviceability, it is recommended to have refrigerantline flare connections and the drain connections on the outside ofthe wall that the fan coil can be mounted on.

If the piping is going through the back:

1. Use the mounting plate to determine the pipe hole position.Drill pipe hole diameter per values given in Fig. 15 through17. The outside pipe hole is 1/2--in. (13 mm) min. lower thaninside pipe hole, so it slants slightly downward (see Fig. 18).

1/2 in. (13 mm) Min.

INDOOR OUTDOORA07371

Fig. 18 --- Drill Holes

If the piping is going through the right or left side:

1. Use a small saw blade to carefully remove the correspondingplastic covering on the side panel and drill the appropriate sizehole where the pipe is going through the wall.

Pipe holder

Pipe cover

Right piping

Left piping

Pipe cover

Right back piping

Left back piping

1 2

3

4

A14349Fig. 19 --- Piping Locations

17

INSTALL ALL POWER, INTERCONNECTINGWIRING, AND PIPING TO INDOOR UNIT

1. Run interconnecting piping and wiring from the outdoorunit to the indoor unit.

2. Run interconnecting cable through the hole in the wall(outside to inside).

3. Lift the indoor unit into position and route the piping and thedrain through the hole in the wall (inside to outside). Fit theinterconnecting wiring into the back side of the indoor unit.

4. Put an upper claw at the back of the indoor unit on theupper hook of the Mounting Plate. Move the indoor unitfrom side to side to ensure it is securely hooked.

5. Open the front cover of the indoor unit and remove the fieldwiring terminal block cover.

6. Pull the interconnecting wire up from the back of the indoorunit and position in close to the terminal block on theindoor unit.

7. Push the lower part of the indoor unit up on the wall, thenmove the indoor unit from side to side, up and down toensure it is hooked securely (see Fig. 20).

Upper hook

Lower hook

A07347a

Fig. 20 --- Indoor Unit Installation

8. Connect wiring from the outdoor unit per connectiondiagram.

9. Replace the field wiring cover and close the front cover of theindoor unit.

10. Connect the refrigerant piping and the drain line outside ofthe indoor unit. Complete the pipe insulation at the flareconnection then fasten piping and wiring to the wall asrequired. Completely seal the hole in the wall.

11. Connect the drain line. The drain line must not have a trapanywhere in its length, must pitch downwards, and must beinsulated up to the outside wall (see Fig. 21).

Proper Do not put drain end into waterDo not form a rise

A14351

Fig. 21 --- Proper Drain Hose InstallationNOTE: For proper orientation of the refrigerant piping,electrical cable and drain lines, refer to Fig. 22.

Interconnecting

Wiring

Drain Piping

Refrigerant Piping

Tape

Indoor unit

..... .

..

.....

...

..

.. .

.. . ...

.

..

. .

.

A07346

Fig. 22 --- Proper Orientation

18

CASSETTE INDOOR UNIT INSTALLATIONSelect install location of the indoor unit

1. Obstructions should be removed from the indoor unit’s intakeor outlet vents so the air can flow throughout the room.

2. Make sure the installation is in accordance with therequirements of the required clearances on the schematicdiagram.

3. Select a location that can withstand 4 times the weight ofthe indoor unit and would not increase the operating noise.

4. Ensure the unit is level.

5. Select a location where condensated coagulated water candrain easy connect easy with the outdoor unit.

6. Ensure there is enough space for care and maintenance.

Ensure the height between the indoor unit and ground is 3ft. (1mt) or 16ft (5mt).

7. When installing the steeve bolt, check if the install place canwithstand a weight 4 times of the unit’s. If not, reinforcebefore installation. Refer to the install cardboard todetermine where the location should be reinforced.

IMPORTANT: To guarantee the good performance, the unit mustbe installed by professional personnel according to this instruction.

25 3/5 in (650 mm)

22 4/9 in (570 mm)

15 3/4 in (400 mm)

)m

m 0

75(

ni 9/

4 2

2

)m

m 4

06(

ni 9/

7 3

2

)m

m 0

56(

ni 5/

3 5

2

Install dimension of mode

37

2/5

in (

95

0 m

m)

37 2/5 in (950 mm)

35 in(8 90 mm)

35 i

n(8

90

mm

)

33 in(8 40 mm)

33

in

(84

0 m

m)

30 5

/7 in

(780

mm

)

26 7/9 in (680 mm)

Fig. 23 --- Dimension of ceiling opening and location of thehoisting screw (M10)

IMPORTANT: The drilling of holes in the ceiling must beperformed by professional personnel.

20.5

9in/

523

22.4

4in/

570

25.4

7in/

647

21.45in/54522.44in/570

25.47in/647

Fig. 24 --- Drilling Holes

in/

Fig. 25 --- Drilling Holes

Fig. 26 --- Drilling HolesNOTE: Installation is possible with a ceiling dimension of 23.62in. (600m) (marked with *). However to achieve a ceiling--paneloverlapping dimension of 0.59in (15mm), the spacing between theceiling and the unit should be 0.79 in. (20mm) or less. If thespacing between the ceiling and the unit is over 0.79 in. (20mm),attach sealing material in the part or recover the ceiling.

INDOOR UNIT MAIN BODY INSTALLATIONInstallation is possible with a ceiling dimension of 23.62 in.(600mm) (marked with *). However, to achieve a ceiling--paneloverlapping dimension of 0.59 in. (15 mm), the spacing betweenthe ceiling and the unit should be 0.79 in. (20mm or less). If thespacing between ceiling and the unit is over 0.79 in. (20mm),attach sealing material in the part or recover the ceiling.

1. Prepare the ceiling opening needed for installation whereapplicable (for existing ceilings).

a. Create the ceiling opening required for installation. Fromthe side of the opening to the casing outlet, implement therefrigerant and drain piping and wiring for the remotecontroller (unnecessary for wireless type). Refer to eachpiping or wiring section.

b. After creating an opening in theceiling, itmay benecessaryto reinforce the ceiling beams to keep the ceiling level andto prevent it from vibrating. Consult the builder for details.

2. Install the installation hooks. Use either a M8 or M10 sizebolt.

a. Use expansible hooks, sunken anchors or other fieldsupplied parts to reinforce the ceiling in order to bear theweight of the unit.

b. Adjust the clearance from the ceiling before proceedingfurther. Installation example see Fig. 27.

19

12

3

4

Fig. 27 --- Installation Clearances(1.) Ceiling slab

(2.) Expansible hook (optional)

(3.) Installation hook (optional)

(4.) False ceiling

NOTE: For other installation than standard installation, contactyour dealer for details.

INDOOR UNIT INSTALLATIONWhen installing optional accessories, review the list of optionalaccessories in the installation manual. Depending on the fieldconditions, it may be easier to install optional accessories beforethe indoor unit is installed (except for the decoration panel).However, for existing ceiling, install the fresh air inlet componentkit and branch duct before installing the unit.

1. Install the indoor unit temporarily.

a. Attach the hanger bracket to the suspension bolt. Be sureto fix it securely by using a nut and washer from the upperand lower sides of the hanger bracket.

b. Securing the hanger bracket (see Fig. 28).

-

1

3

4

2

Fig. 28 --- Secure the Hanger bracket(1.) Nut (field supply)

(2.) Washer (field supply)

(3.) Hanger bracket

(4.) Double nuts (field supply, tighten)

2. Secure the paper pattern for installation (for new ceilingsonly).

S The paper pattern for installation corresponds with themeasurements of the ceiling opening. Consult the builderfor details.

S The center of the ceiling opening is indicated on the paperpattern for installation.

S After removing the packaging material from the paperpattern for installation, attach the paper pattern to the unitwith the attached screws (see Fig. 29).

Fig. 29 --- Attach Screws(1.) Paper pattern for installation (on some models)(2.) Center of the ceiling opening

(3.) Screws (supplied with the decoration panel)

3. Adjust the unit to the right position for installation. Refer tothe chapter “Preparations Before Installation”.

4. Check if the unit is horizontally leveled.

a. Do not install the unit tilted. The indoor unit is equippedwith a built--in drain pump and float switch. (If the unit istilted against the direction of the condensate flow (thedrainpiping side is raised), the float switchmay malfunction andcause water to drip).

b. Check if the unit is leveled at all four corners with a waterlevel or a water--filled vinyl tube (see Fig. 30).

Fig. 30 --- Ensure Unit is level(1.) Water level

(2.) Vinyl tube

DRAIN PIPING WORKDrain Piping Installation

Install the drain piping as shown in Fig. 31 and take steps toeliminate condensation. Improperly rigged piping could lead toleaks and eventually wet furniture and belongings.

1-1.5m 13~5ft

2

Fig. 31 --- Drain Piping Installation

Fig. 32 --- Hanging Bar(1.) Hanging bar

(2.) 1/100 gradient

20

Install the Drain Pipes

S Keep piping as short as possible and slope it downwardsat a gradient of at least 1/100 so that air may not remaintrapped inside the pipe.

S Keep pipe size equal to or greater than that of theconnecting pipe (PVC pipe, nominal diameter 0.79 in.(20mm)) /, outside diameter 0.98 in. (25mm).

S Push the drain hose as far as possible over the drain socket,and tighten the metal clamp securely.

Fig. 33 --- Push the drain hose5. Remove the paper pattern for installation (for new ceilingonly).

(1.) Drain socket (attached to the unit)

(2.) metal clamp

(3.) Drain hose

(4.) Insulation (field supply)

a. Insulate the drain hose inside the building.

b. If the drain hose cannot be sufficiently set on a slope, fitthe hose with drain raising piping (field supply).

c. Ensure the heat insulation work is executed on thefollowing 2 spots to prevent any possible water leakagedue to dew condensation:

(1.) Indoor drain pipe

(2.) Drain socket.

DRAINAGE HOSEIMPORTANT: Observe all local sanitary codes when installingcondensate drains.

1. Install the drain hose.

S The drain hose diameter should be equal or bigger than theconnection pipe’s. (The diameter of the polythene pipe:Outerdiameter 1 in. (25mm)Surface thickness 0.06 in. (1.5mm).

S The drain hose should be short and the drooping gradientshould be less than 1/100 to prevent the formation of an airbubble. If the drain hose does not has enough of a droopinggradient, a drain raising pipe should be added.

S To prevent a bend in the drain hose, the distance between thehoisting stand should is 3 to 5 ft. (1 to 1.5 m) (see Fig. 34).

Fig. 34 --- Drain Hose

S Use the drain hoseand clamp attached. Insert the drain hoseinto the drain vent, and then tighten the clamp.

S Entwine the big sponge on the clamp of drain hose toinsulate heat.

S Heat insulation should be applied to the indoor drain hose.

Sponge(attachment)

Clamp(attachment)

Below 1/6 in (4 mm)

Clamp

Drain hoseSponge (gray)

Fig. 35 --- Drain HoseNOTE: Drain Setup pipe

S The install height of the drain raising pipe should less than21 in. (530 mm).

S The drain raising pipe should form a right angle with theunit, and distance to unit should not beyond 11.81 in.(300mm).

0~2.

95in

0~75

21in

/530

29.5

in/7

50

8.7i

n/22

0

Unit: in/mm

Fig. 36 --- Drain Setup PipeINSTRUCTIONThe slant gradient of the attached drain hose should be within 3 in.(75 mm) so that the drain hole does not have to endure unnecessaryoutside force.

3 in

(75 m

m)

19 2/

3 (50

0 mm

)

Fig. 37 --- Slant Gradient1. Install the drain hose according to the following process ifseveral drain hoses join together.

Fig. 38 --- Slant Gradient

21

2. Check the smoothness of the drain after the installation.

3. Check the drain state by immitting 36 3/5 in. 3 (600 cc)water slowly from the outlet vent or test hole.

4. Check the drain in the state of refrigerating after installingthe electric circuit.

Unit: in/mm

Fig. 39 --- Drain

1 Control box lid2 Wiring diagram label 3 Power supply terminal block4 Clamp for wiring5 Wiring between units 6 Plastic cover7 Clamp (field supply)

1 2

4

56

3

7

Fig. 40 --- Cassette

22

INSTALLATION OF THE DECORATION PANELDetach the intake grill

1. Slide the two grille hooks toward the middle of thedecoration panel.

1 Intake grille2 Grille hook

1

2

Fig. 41 --- Intake Grille2. Open the intake grille and remove.

Fig. 42 --- Open Intake GrilleInstall the decoration panel

1. Align the indicate ” ” on the decoration panel to the indicate“ “ on the unit.

2. Attach the decoration panel to the unit with the suppliedscrews as shown in Fig. 43.

1 Decoration panel2 Screws (M5)(supplied with the panel)

1

2

Fig. 43 --- Attach the Decoration Panel

3. After installing the decoration panel, ensure that there is nospace between the unit body and decoration panel. Otherwiseair may leak through the gap and cause dewdrop (see Fig. 44).

Fig. 44 --- Eliminate Space4. Mount the intake grille. Ensure that the buckles at the backof the grille are properly seated in the groove of the panel.

Fig. 45 --- Mount the Intake Grille5. Connect the two wires of the decoration panel to themainboard of the unit.

10-core wire5-core wire

Fig. 46 --- Connect two wires

23

Wired Remote Controller (Available as Accessory) 5 Pin Molex plug to be

connected to Wired Controller’s cable

Grille Display. 10 pin Molex plug to be

connected to Control Board.

Grille Louver Motor Power. 5 Pin Molex plug to be

connected to Control Board

Grille Louver Motor Power. 5 Pin Port

Grille Display 10 Pin Port

Fig. 47 --- Panel Cassette

6. Fasten the control box lid with 2 screws.

Fig. 48 --- Fasten the Control Box Lid

7. Close the intake grille, and close the 2 grille hooks.

Fig. 49 --- Close the intake grilleTEST OPERATIONEnsure the control box lids are closed on the indoor and outdoorunits. After finishing the construction of refrigerant piping, drainpiping, and electric wiring, conduct test operation accordingly toprotect the unit.

Test operation after installing decoration panel

1. Open the gas side stop valve.

2. Open the liquid side stop valve.

3. Electrify crank case heater for 6 hours.

4. Set to cooling operation with the remote controller and startoperation by pushing ON/OFF button.

24

5. Check the following points. If there is any malfunction,resolve it according to the chapter “Troubleshooting” in theowner’s manual.

Owners Manual

The indoor unit

--Whether the switch on the remote controller works well.

--Whether the buttons on the remote controller works well.

--Whether the air flow louver moves normally.

--Whether the room temperature is adjusted well.

--Whether the indicator lights normally.

--Whether the temporary buttons work well.

--Whether there is vibration or abnormal noise duringoperation.

--Whether the drainage flows smoothly.

The outdoor unit

--Whether there is vibration or abnormal noise duringoperation.

--Whether the generated wind, noise, or condensed of by theair conditioner negatively impact the neighborhood.

--Whether any of the refrigerant is leaked.

6. Turn off the main power supply after operation.

IMPORTANT: A protection feature prevents the air conditionerfrom being activated for approximately 3 minutes when it isrestarted immediately after shut off.

DUCTED INDOOR UNITS INSTALLATIONINSTALLATION OF THE INDOOR DUCTED UNITRequirements on the Installation Location

1. Ensure the hanger is strong enough to withstand the weightof the unit.

2. The drainage pipe is easy for connection.

3. No obstacle is in the inlet/outlet and the air circulation is ingood condition.

4. Ensure the installation space is left for access tomaintenance.

5. It should be far away from where there is a heat source,leakage of any inflammable, explosive substances, or smog.

6. It is the ceiling type unit (concealed in the ceiling).

7. The power cords and connection lines of the indoor andoutdoor units must be at least 1m away from the TV set orradio to avoid the image interference and noise (even if 1mis kept, the noise may be produced due to the strongelectromagnetic wave).

Installation of the Indoor Ducted Unit

1. Insert the M10 expansion bolt into the hole, then knock thenail into the bolt. Refer to the Outline Dimension Drawingsof the Indoor Unit for the distance between holes and seeFig. 50 for the installation of the expansion bolt.

Fig. 50 --- Expansion Bolt2. Install the hanger on the indoor unit (see Fig. 51).

Air conditioning unitHanger bolt

Anchor

Fig. 51 --- Hanger Bolt3. Install the indoor unit on the ceiling, as shown in Fig. 52.

48mm

Fig. 52 --- Install the indoor unit

S Prior to the installation, make a good preparation for all piping(refrigerant pipe, drain pipe) and wiring (wires of the wiredcontroller, wires between the indoor and outdoor unit) of theindoor unit to make the further installation much easier.

S If there is an opening in the ceiling, its better to reinforce itto keep it flat and prevent it from vibrating. Consult the userand builder for more details.

S If the ceiling is not strong enough, the unit can be secured onan angle iron beam.

S If the indoor unit is not installed in the air conditioningarea, place a sponge around the unit to prevent condensing.The thickness of the sponge depends on the actualinstallation environment.

! CAUTION

INDOOR DUCTED UNIT HORIZONTAL CHECKAfter the installation of the indoor unit, its horizontality must bechecked to make sure the unit keeps a horizontal fore and aft andmaintains an inclination of 5_ toward the drain pipe right and left,as shown in Fig. 53.

Horizontality Check Device

Fig. 53 --- Horizontal check device

25

AIR SUPPLY DUCT INSTALLATION1. Installation of the Rectangular Air Supply Duct

4 6 83 75

1

2

3

Return air Supply airReturn air

Fig. 54 --- Installation of Air Duct Supply

Table 19—Air DuctNUMBER NAME NUMBER NAME

1 Hanger 5 Plenum Box

2 Return AirDuct 6 Filter Screen

3 Canvas Duct 7 Main AirSupply Duct

4 Return AirHeat 8 Air Supply

Outlet

INSTALL THE ROUND AIR SUPPLY DUCT

1

24

3

5 6 7

8 9

Fig. 55 --- Air supply duct


1 Return AirDuct 6 Transition Duct

2 Canvas Duct 7 Air SupplyDuct

3 Return AirLouver 8 Diffuser

4 Hanger 9 Diffuser Joint

5 Air SupplyDuct

ROUND AIR SUPPLY DUCT INSTALLATION STEPS1. Pre--install the outlet of the round duct on the transition ductand then secure it with the tapping screw.

2. Place the transition duct to the air outlet of the unit andsecure it with a rivet.

3. Connect the outlet to the duct and then tighten them withtape. Other installation details are not covered herein.

S The max. length of the duct means the max. length of the airsupply duct plus the max. length of the return air duct.

S The duct is either rectangular or round and connected withthe air inlet/outlet of the indoor unit. Among all air supplyoutlets, at least one should remain open. As for the roundduct, it needs a transition duct of which the size shouldmatch with the air supply of the unit. After the fitting of thetransition duct, it is best to keep the round duct 32 ft. (10m)away from the corresponding diffuser.

! CAUTION

26

ADJUST AIR INLET

Take off the ventilation panel and flange, cut off the staples at the side rail.

V

When installing the fi lter mesh, please plug it into flange inclined from the air return ope ning, and then push up.

Once the filter mesh, with the fixing blocks have been inserted into the flange position holes, the installation is complete.

Fig. 56 --- Air Supply Outlet

RETURN AIR DUCT INSTALLATION1. The default installation location of the rectangular flange isin the back and the return air cover plate in the bottom asshown in Fig. 57.

Return Air Cover Plate

Downward Return Air

Backward Return Air

Rectangular Flange

Fig. 57 --- Return Air Duct2. If the downward return air is desired, just change the placeof the rectangular flange and the return air cover plate.

3. Connect one end of the return air duct to the return air outletof the unit by rivets and the other to the return air louver.For the sake of the convenience to freely adjust the height, acutting of canvas duct will be helpful, which can bereinforced and folded by 8# iron wire.

4. More noise is likely to be produced in the downward returnair mode than the backward return air mode. We suggestinstalling a muffler and a plenum box to minimize the noise.

5. The installation method can be chosen with considering theconditions of the building and maintenance etc. (see Fig. 58).

1Wind supply

Back windInstall the back wind pipe (a)

Wind supply

Install the back wind pipe(b)Back wind

1

2

45

3

64

5

Fig. 58 --- Return Air Duct


1Return Air Louver

(with the filterscreen)

4 Indoor Unit

2 Canvas Duct 5 Air SupplyDuct

3 Return Air Duct 6 Access Grille

27

CONDENSATE PIPE INSTALLATION1. The condensate pipe should keep a inclination angle of 5 ~10”, to facilitate the drainage of the condensate water. Andthe joints of the condensate pipe should be insulated by theinsulation material to prevent condensing (see Fig. 59).

Insulating Layer for the Condensate Pipe

Pipe Lid

Fig. 59 --- Thermal Insulation of the Condensate Pipe2. There is a condensate outlet on both the left and right sides ofthe unit. Once one is confirmed for use, the other should beclogged by a rubber plug, bundled by the binding wire andinsulated by the insulation material to avoid water leakage.

3. The right outlet is defaulted to be clogged with a plug.

IMPORTANT: No water leakage is allowed on the joint of thecondensate pipe.

DESIGN OF THE DRAIN PIPE1. The drain pipe should always be kept an inclination angle(>1/100) to avoid water from gathering.

2. During the connection of the drain pipe and device, do notimpose excessive force on the pipe on one side of the device.Additionally the pipe should be secured closely to the device.

3. The drain pipe can be the ordinary hard PVC pipe whichcan be purchased locally. During the connection, inset theend of the PVC pipe to the drain outlet, then tighten it withthe drain hose and binding wire. Never connect the drainoutlet and the drain hose with adhesive.

4. When the drain pipe is used for multiple devices, the publicsection of the pipe should be 4 in. (100 mm) lower than thedrain hole of each device and it is better to use the muchthicker pipe for such a purpose.

DRAIN PIPE INSTALLATION1. The diameter of the drain pipe should be larger than orequal to that of the refrigerant pipe (PVC pipe, outerdiameter: 1 in. (25 mm), wall thickness 0.06 in. (1.5 mm).

2. The drain pipe should be a short as possible and with atleast a 1/100 degree of slope to avoid forming air pockets.

3. If the proper degree of slope of the drain pipe is notallowed, a lift pipe should be installed.

4. A distance of .9 ft.~6.6 ft. (1.5 m~2 m) should be keptbetween the hangers to avoid the drain hose from making aturn.

4.9ft~6.6ft/1.5m~2m

Fig. 60 --- Slope Degree

Fig. 61 --- Slope Degree

5. Insert the drain hose into the drain hole and tighten it withclamps.

6. Wrap the clamps with large amount of sponge for thermalinsulation.

7. The drain hose inside the room also should be insulated.

Clamp (accessory)

Sponge (gray) Drain Hose

Sponge (accessory)

Clamp(accessory)

Max. 4mm

Fig. 62 --- Drain Hose Insulation

28

FAN PERFORMANCES (DUCTED UNITS)Static pressure curve (static pressure deducted)

Table 22—Fan Performances

Static PressureRange In. WG (Pa)

Size 0 1 2 3 49 & 12 0.02 (5) 0.04 (10) 0.08 (20) 0.12 (30) 0.16 (40) 0---0.18 (0---45)

18 0.04 (10) 0.10 (25) 0.14 (35) 0.18 (45) 0.22 (55) 0---0.28(0---70)24 0.04 (10) 0.10 (25) 0.16 (40) 0.22 (55) 0.28 (70) 0---0.40 (0---100)

Factory Setting √

Table 23—System SizesSystem size 9K 12K 18K 24K

HighCFM 335 370 520 820CMH 570 629 884 1394

MediumCFM 290 320 430 620CMH 493 544 731 1054

LowCFM 240 260 360 520CMH 408 442 612 884

29

Size 9K

30

Size 12K

31

Size 18K

32

Size 24K

33

FLOOR CONSOLE INDOOR UNITINSTALLATIONFollow these key steps when selecting a location for the unit.

S Select a place where cool air can be distributed throughoutthe room.

S Select a place where condensation water is easily drainedaway.

S Select a site that can handle the weight of the indoor unit.

S Select a place which has easy access for maintenance.

Indoor unit

The indoor unit should be sited in a place where:

1. The restrictions for the installation specified in the indoorunit installation drawings are met.

2. Both the air intake and exhaust have clear paths.

3. The unit is not in the path of direct sunlight.

4. The unit is away from a heat or steam source.

5. There is no source of machine oil vapour (this may shortenindoor unit life).

6. Cool (warm) air is circulated throughout the room.

7. The unit is away from electronic ignition type fluorescentlamps (inverter or rapid stert type) as they may shorten theremote controller range.

8. The unit is at least 3.28 ft. (1 m) away from any television orradio set (unit may cause interference with the picture orsound).

CAUTIONS FOR INSTALLATION WHERE AIRCONDITIONER TROUBLE IS LIABLE TO OCCUR

S Do not install in areas with or near an abundance of oil.

S Do not install in areas with an acid base area.

S Do not install in areas with an irregular electrical supply.

Location for securing the installation panel

<0.24in/6mm

7.7in/195mm

Fig. 63 --- Schematic Drawing of Hooks

REFRIGERANT PIPINGUse the following steps to connect the refrigerant pipe.

1. Drill a hole (3”) in diameter) for piping and electricalrouting.

2. The location of the hole is different depending on whichside of the pipe is taken out.

3. For piping, see Connecting the Refrigerant Pipe, underIndoor Unit Installation (1).

4. Allow space around the pipe for a easier indoor unit pipeconnection.

CAUTION!The suggested shortest pipe length is 8.2 ft. (2.5 m) to avoidnoise from the outdoor unit and vibration. (Mechanicalnoise and vibration may occur depending on how the unit isinstalled and the environment in which it is used).

See the installation manual for the outdoor unit for themaximum pipe length.

BORING AWALL HOLE AND INSTALLING WALLEMBEDDED PIPE

S For walls containing metal frame ormetal board ,be sure touse a wall embedded pipe and wall cover in thefeed--through hole to prevent water leakage.

S Be sure to caulk the gaps around the pipes with caulkingmaterial to prevent water leakage.

1. Bore a feed--through hole of 3” in the wall so it has a downslope toward the outside.

2. Insert a wall pipe into the hole.

3. Insert a wall cover into wall pipe.

Inside Outside

CaulkingWall embedded pipe (field supply)

Wall hole cover

Wall embedded pipe (field supply)

3”

Fig. 64 --- Wall Embedded Pipe

4. After completing refrigerant piping, wiring, and drainpiping, caulk pipe hole gap with putty.

DRAIN PIPING1. Use commercial regid polyvinyl chloride pipe general VP20 pipe, outer diameter 1 in. (26 mm), inner diameter 4/5 in.(20 mm) for the drain pipe.

2. The drain hose (outer diameter 5/7 in. (18 mm) at connectingend, 8 2/3 in. (220 mm) long) is supplied with the indoor unit.Prepare the drain pipe picture below position.

3. The drain pipe should be inclined downward so that waterflows smoothly without any accumulation. (Should not be atrap.)

4. Insert the drain hose to this depth so it will not be pulled outof the drain pipe.

5. Insulate the indoor drain pipe with insulation material toprevent condensation.

6. Remove the air filters and pour some water into the drainpan to check the water flows smoothly.

4 in (100 mm)Drain hose

4 in

(100

mm

)

6 in (150 mm)

Vinyl chloridedrain pipe

2 in (50 mm)or more

Reducer

Must be no trap

Do not touch water

Fig. 65 --- Trap

34

INSTALLING THE INDOOR UNIT1. Preparation

S Open the front panel, remove the 4 screws and dismountthe front grille while pulling it forward.

Fig. 66 --- Remove the screws


S Follow the arrows to disengage the clasps on the front caseto remove it.

S Follow the procedure below when removing the slitportions.

For Moldings

S Remove the pillars. Remove the slit portions on the bottomframe using nippers.

3)Sidecasings

2)Upper casing

3)Sidecasings

Remove the pillarRemove screws


For Side Piping

S Remove the pillars.

(1.) Remove the screws.

(2.) Remove the upper casing (2 tabs).

(3.) Remove the left and right casings (2 tabs on eachside).

(4.) Remove the slit portions on the bottom frame andcasings using nippers.

(5.) Return by following the steps in reverse order(3>2>1).

Casing

Remove the pillar

Fig. 69 --- Remove the pillar

Casing

Remove the pillar

Bottom frame

Fig. 70 --- Remove the pillar

2. Installation

S Secure using 6 screws for floor installations. Do notforget to secure to the rear wall.

S For wall installations, secure the mounting plate using 5screws and the indoor unit using 4 screws.

35

The mounting plate should be installed on a wall which cansupport the weight of the indoor unit.

(1.) Temporarily secure the mounting plate to the wall,make sure that the panel is completely level, andmark the boring points on the wall.

(2.) Secure the mounting plate to the wall with screws.

6screws

Casing

Fig. 71 --- Floor Installation

6screws

Molding

7.7in (195mm)

-Fig. 72 --- Wall Installation

(3.) Once refrigerant piping and drain pipingconnections are complete, fill in the gap of thethrough hole with putty. A gap can lead tocondensation on the refrigerant pipe, and drainpipe, and the entry of insects into the pipes.

(4.) Attach the front panel and front grille in their originalpositions once all connections are complete.

OUTDOOR UNIT INSTALLATION1. Use a rigid base to support unit in a level position.

2. Locate outdoor unit and connect piping and wiring.

CAUTION!



Excessive torque can break flare nut depending oninstallation conditions.

NOTE: Install the outdoor unit on a rigid base to reduce noise levelsand vibration. Determine the optimal air outlet direction to preventdischarged air from being blocked. If the installation site is exposed tostrong winds such as a coastal areas, ensure the fan’s proper operationby installing the unit lengthwise along the wall or use dust or shieldplates. If the unit needs to be suspended, the installation bracket shouldcomply with the suspension requirements in the installation bracketdiagram. The installation wall should be solid brick, concrete or thesame intensity construction, or take steps to reinforce and dampen thesupport. The connection between the bracket and the wall as well asthe bracket and the air conditioner should be firm, stable and reliable.Ensure there is no obstacle which may block the radiating air.

Strong

wind

A07350

Fig. 73 --- High Wind Installation

Piping Connections to Outdoor Unit

IMPORTANT: Use refrigeration grade tubing only. No othertubing type may be used. Use of other tubing types will void themanufacturer’s warranty. Ensure there is enough piping to coverthe required length between the outdoor and indoor unit. Only usepiping suitable for high side pressure for both high and low sideconnections.

36

Piping Guide:

S Do not open service valves or remove protective caps fromtubing ends until all the connections are made.

S Bend tubing with bending tools to avoid kinks and flat spots.S Keep the tubing free of dirt, sand, moisture, and othercontaminants to avoid damaging the refrigerant system.

S Avoid sags in the suction line to prevent the formation of oil traps.Insulate each tube with minimum 3/8--in. (10 mm) wall thermalpipe insulation. Inserting the tubing into the insulation beforemaking the connections saves time and improves installation quality.1. The unit is equipped with multiple pairs of service valves.Each pair is clearly marked (color and letter) to identify theindoor unit circuits. In the outdoor unit wiring area, eachindoor unit interconnecting terminal block is marked (letter)the same as the corresponding pair of service valves. Theindoor units must be piped and wired in matched sets (A to A;B to B, etc.).

2. It is not required to use all of the available fan coilconnections if the application does not require them at thecurrent time. The system can be expanded at any time.

3. Conversion joints are supplied with the outdoor unit. Theyare required for certain fan coil combinations. These jointsare to be connected to the outdoor unit as needed to matchthe line set size.

4. Cut tubing with tubing cutter.

5. Install correct size flare nut onto tubing and make flareconnection.

6. Apply a small amount of refrigerant oil to the flareconnection on the tubing.

7. Properly align tubing in with service valve (conversionjoint).

8. Tighten flare nut and finish installation using two wrenchesas shown in Fig. 74.

A07354

Fig. 74 --- Tighten Flare NutTable 24— Tightening Torque

Pipe DiameterInch (mm)

Tightening Torque

Ft--lb N--m

Ø1/4” (6.35) 10 to 13 13.6 to 17.6

Ø3/8” (9.52) 23 to 31 32.5 to 42.0

Ø1/2” (12.7) 37 to 46 50.1 to 62.3

Ø5/8” (15.88) 60 to 60 67.7 to 81.3

INSTALL ALL POWER AND INTERCONNECTINGWIRING TO OUTDOOR UNIT

1. Mount outdoor power disconnect.

2. Run power wiring from main box to disconnect per NECand local codes.

3. Remove field wiring cover (if available) from unit byloosening screws.

4. Remove knockouts.

5. Connect the conduit to the conduit panel.

6. Properly connect both power supply and control lines toterminal block per the connection diagram.

7. Ground unit in accordance with NEC and local electricalcodes.

8. Use lock nuts to secure conduit.

9. Reinstall field wiring cover.

INSTALL ALL POWER, INTERCONNECTINGWIRING, AND PIPING TO INDOOR UNIT.

1. Run interconnecting piping and wiring from outdoor unit toeach indoor unit (in matched pairs).

2. Pass interconnecting cable through hole in wall (outside toinside).

3. Lift indoor unit into position and route piping and drainthrough hole in wall (inside to outside). Fit theinterconnecting wiring into back side of indoor unit.

4. Open front cover of indoor unit and remove field wiringterminal block cover (see Fig. 75).

Field Wiring Cover

InterconnectingCable

A08279Fig. 75 --- Field Wiring Cover

5. Pull interconnecting wire up from back of indoor unit andposition in close to the terminal block on indoor unit.

6. Push bottom of indoor unit onto mounting plate tocomplete wall mount.

7. Connect wiring from the outdoor unit per the connectiondiagram.

NOTE: Polarity of power wires must match originalconnection on outdoor unit.

8. Replace field wiring cover and close front cover of indoorunit.

9. Connect refrigerant piping and drain line outside of indoorunit. Refer to Piping Connections to Outdoor Unit sectionfor proper installation of flare connections. Complete pipeinsulation at flare connection then fasten piping and wiringto the wall as required. Completely seal the hole in the wall.

10. Repeat steps 1 through 10 for each indoor unit.

37

SYSTEM VACUUM AND CHARGE

UNIT DAMAGE HAZARD


Never use the system compressor as a vacuum pump.

CAUTION!

Refrigerant tubes and indoor coil should be evacuated using therecommended deep vacuum method of 500 microns. The alternatetriple evacuation method may be used if the procedure outlinedbelow is followed. Always break a vacuum with dry nitrogen.

NOTE: All units have a Master Suction and Liquid Line ServiceValve (excluding the 18,000 BTU unit).

1. Completely tighten the flare nuts A, B, C, D, E. Fully openall circuits service valves, connect the manifold gage chargehose to the charge port of the low side Master service valveto evacuate all circuits at the same time (see Fig. 76).

2. Connect the charge hose to the vacuum pump.

3. Open (fully) the low side of the manifold gage (see Fig. 77).

4. Start the vacuum pump.

5. Evacuate using either deep vacuum or triple evacuationmethod.

6. After the evacuation is complete, fully close the low side ofmanifold gage and stop operation of vacuum pump.

7. The factory charge contained in the outdoor unit is good forup to 25 ft. (8 m) of line length. For refrigerant lines longerthan 25 ft. (8 m), add refrigerant, up to the allowable length,as specified in the System Requirements section.

8. Disconnect the charge hose from charge connection of thelow side service valve.

9. Securely tighten caps of service valves.

Outdoor Unit Indoor UnitRefrigerant

Service Valve

Low Side

High Side

A

B

C

D

A07360

Fig. 76 --- Service Valve

Manifold Gage

500 microns

Low side valve High side valve

Charge hoseCharge hose

Vacuum pump

Low side valve

A07361

Fig. 77 --- Manifold

Deep Vacuum Method

The deep vacuum method requires a vacuum pump capable ofpulling a vacuum of 500 microns and a vacuum gage capable ofaccurately measuring this vacuum depth. The deep vacuum methodis the most positive way of assuring a system is free of air andliquid water (see Fig. 78).

500

MINUTES0 1 2 3 4 5 6 7

10001500

LEAK INSYSTEM

VACUUM TIGHTTOO WET

TIGHTDRY SYSTEM

2000MICRONS

250030003500400045005000

A95424

Fig. 78 --- Deep Vacuum Graph

Triple Evacuation Method

The triple evacuation method should only be used when vacuumpump is only capable of pumping down to 28 in. of mercuryvacuum and system does not contain any liquid water.Refer to Fig. 79 and proceed as follows:

1. Pump system down to 28 in. of mercury and allow thepump to continue operating for an additional 15 minutes.

2. Close service valves and shut off vacuum pump.

3. Connect a nitrogen cylinder and regulator to system andopen until system pressure is 2 psig.

4. Close service valve and allow system to stand for 1 hr.During this time, dry nitrogen will be able to diffusethroughout the system absorbing moisture.

5. Repeat this procedure as indicated in Fig. 79. System willthen be free of any contaminants and water vapor.

CHECK FOR TIGHT, DRY SYSTEM(IF IT HOLDS DEEP VACUUM)

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

EVACUATE

RELEASE CHARGE INTO SYSTEM

BREAK VACUUM WITH DRY NITROGEN

EVACUATE

WAIT

A95425

Fig. 79 --- Triple Evacuation Method

Final Tubing Check

IMPORTANT: Check to be certain the factory tubing on bothindoor and outdoor unit has not shifted during shipment.Ensure tubes are not rubbing against each other or any sheetmetal. Pay close attention to feeder tubes, making sure wire tieson feeder tubes are secure and tight.

38

START--UPTest Operation

Perform test operation after completing gas leak and electricalsafety check.

1. Push the “ON/OFF” button on Remote Control to begintesting.

NOTE: A protection feature prevents the air conditioner frombeing activated for approximately 3 minutes.

2. Push MODE button, select COOLING, HEATING, FANmode to check if all functions work correctly.

SYSTEM CHECKS1. Conceal the tubing where possible.

2. Ensure the drain tube slopes downward along its entirelength.

3. Ensure all tubing and connections are properly insulated.

4. Fasten tubes to the outside wall, when possible.

5. Seal the hole through which the cables and tubing pass.

INDOOR UNIT1. Do all Remote Control buttons function properly?

2. Do the display panel lights work properly?

3. Does the air deflection louver function properly?

4. Does the drain work?

OUTDOOR UNIT1. Are there unusual noises or vibrations during operation?

Explain The Following Items To Customer With The Aid OfThe Owner’s Manual:

1. How to turn air conditioner on and off; selectingCOOLING, HEATING and other operating modes; settinga desired temperature; setting the timer to automatically startand stop air conditioner operation; and all other features ofthe Remote Control and display panel.

2. How to remove and clean the air filter.

3. How to set air deflection louver.

4. Explain care and maintenance.

5. Present the Owner’s Manual and installation instructions tocustomer.

39

CONNECTION DIAGRAMS

Fig. 80 --- Connection Diagram Size 18


40

CONNECTION DIAGRAMS (CONT)


Fig. 83 --- Connection Diagram Size 48Notes:

1. Do not use thermostat wire for any connection between indoor and outdoor units.2. All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and will result in a fault code.

41

Table 25—Indoor Unit Error DisplayOPERATIONLAMP TIMER LAMP DISPLAY LED STATUS

☆1 time X E0 Indoor unit EEPROM error☆2 times X E1 Communication malfunction between indoor and outdoor units.☆4 times X E3 Indoor fan speed has been out of control☆5 times X E4 Indoor room temperature sensor T1 open circuit or short circuit☆6 times X E5 Evaporator coil temperature sensor T2 open circuit or short circuit☆7 times X EC Refrigerant leakage detection☆8 times X EE Water--- level alarm malfunction☆1 time O F0 Current overload protection☆2 times O F1 Open circuit or short circuit of outdoor ambient temperature sensor T4☆3 times O F2 Open circuit or short circuit of condenser coil temperature sensor T3☆4 times O F3 Open circuit or short circuit of Compressor discharge temperature sensor T5☆5 times O F4 Outdoor unit EEPROM error☆6 times O F5 Outdoor fan speed has been out of control☆7 times O F6 T2B sensor error☆8 times O F7 Lifting---panel communication error☆9 times O F8 Lifting---panel malfunction☆10 times O F9 Lifting---panel is not closed☆1 time ☆ P0 IPM malfunction☆2 times ☆ P1 Over voltage or over low voltage protection☆3 times ☆ P2 High temperature protection of compressor top☆4 times ☆ P3 Outdoor low temperature protection☆5 times ☆ P4 Inverter compressor drive error☆6 times ☆ P5 Mode conflict☆7 times ☆ P6 Compressor low---pressure protection☆8 times ☆ P7 Outdoor IGBT temperature sensor error

O (light) X (off)☆ (flash)

OUTDOOR UNIT DIAGNOSTIC GUIDESThis unit has on--board diagnostics. Error codes are displayed on the wired remote controller and the outdoor unit microprocessor board withcolored LED lights. The table below explains the error codes on both.

Table 26—Outdoor Unit Error Display

DISPLAY LED STATUS IDU Error IDU Error

E0 Outdoor EEPROM malfunction F4 E6

E2 Communication malfunction between indoor and outdoor units E1 E2

E3 Communication malfunction between IPM board and outdoor main board —— ——

E4 Open or short circuit of outdoor temperature sensor (T3、T4、T5、T2B) F2 E6

E5 Voltage protection P1 P0

E6 PFC module protection —— ——

E8 Outdoor fan speed has been out of control (Only for DC fan motor models) F5 ——

E9 Wrong wiring connection of 24K indoor unit —— ——

F1 No A Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——

F2 No B Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——

F3 No C Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——

F4 No D Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——

F5 No E Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——

F6 No F Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——

P0 Temperature protection of compressor top P2 P3(P1)

P1 High pressure protection —— ——

P2 Low pressure protection —— ——

P3 Current protection of compressor —— ——(P2)

P4 Temperature protection of compressor discharge —— ——

P5 High temperature protection of condenser —— ——

P6 IPM module protection P0 E5

42

Copyright 2015 Carrier Corporation. S 7310 W. Morris St. S Indianapolis, IN 46231

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No: 38MGQ---02SI

Replaces:38MG---40MA---MB---01SI

Edition Date: 10/15

Installation Instructions38MGQ / 40MAQ / 40MBC / 40MBD / 40MBF Multi---Zone Ductless System Sizes...

Documents

Transcript of Installation Instructions38MGQ / 40MAQ / 40MBC / 40MBD / 40MBF Multi---Zone Ductless System Sizes...